package com.itheima;

public class Test3 {
    public static void main(String[] args) {
        String s1 = "200";
        int i1 = Integer.parseInt(s1);
        System.out.println(i1 + 100);

        int i2 = 80;
        String s2 = i2 + "";
        System.out.println(s2 + 100);
        String s3 = String.valueOf(i2);
        System.out.println(s3 + 100);
    }
}
